<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
       let arr = [];
       for(let i = 0; i < 10; i++){
        arr[i] = function() {
            console.log(i);
        }
       }
    //    arr[  ]();
       arr[9]();



        //     var a = [];
        // for (var i = 0; i < 10; i++) {
        // a[i] = function () {
        //     console.log(i);
        // };
        // }
        // a[6](); // 10
    </script>
</body>
</html>